Jpost | Print ArticleTUCSON, AZ - Despite a century of research, memory encoding in the brain has remained mysterious. Neuronal synaptic connection strengths are involved, but synaptic components are short-lived while mem...

ISS Star Trails (26)Expedition 31 Flight Engineer Don Pettit relayed some information about photographic techniques used to achieve the images: “My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.”

The Tesla Gun | dɸ/dtA bit of both. When no earth is nearby, it makes a very even fringe of tiny sparks around the toroid, plus a very pretty corona field that is damn near impossible to photograph. This sort of shows it:...